random

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@230 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 8 insertions, 0 deletions

diff --git a/decoder/sampler.h b/decoder/sampler.h
index cc13229b..5fef45d0 100644
--- a/decoder/sampler.h
+++ b/decoder/sampler.h
@@ -14,6 +14,7 @@
 #include <boost/random/variate_generator.hpp>
 #include <boost/random/normal_distribution.hpp>
 #include <boost/random/poisson_distribution.hpp>
+#include <boost/random/uniform_int.hpp>
 
 #include "prob.h"
 
@@ -78,6 +79,13 @@ struct RandomNumberGenerator {
     return (prob_t(this->next()) < a);
   }
 
+  RNG &gen() { return m_generator; }
+  typedef boost::variate_generator<RNG&, boost::uniform_int<> > IntRNG;
+  IntRNG inclusive(int low,int high_incl) {
+    assert(high_incl>=low);
+    return IntRNG(m_generator,boost::uniform_int<>(low,high_incl));
+  }
+
  private:
   boost::uniform_real<> m_dist;
   RNG m_generator;